package cn.yunhe.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "AdminLoginFilter", urlPatterns = "/manage/*")
public class AdminLoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpSession session = request.getSession();
        Object obj = session.getAttribute("Curr_User");
        //判断管理员登录过滤器
        if(obj==null){
            HttpServletResponse response = (HttpServletResponse) servletResponse;
            response.sendRedirect("../login.jsp");
        }else {
            filterChain.doFilter(servletRequest,servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
